Auxiliary tool for detecting air tightness of motor

Abstract

The utility model relates to an auxiliary tool for motor airtightness detection, and belongs to the technical field of motor shell airtightness detection, the auxiliary tool comprises an inflation clamp and a plugging clamp, the inflation clamp and the plugging clamp each comprise a cylinder barrel, a locking rod, a tail plug and an adjusting screw rod, the tail plug is fixed at the tail end of the cylinder barrel, and the locking rod is fixed at the tail end of the cylinder barrel. The adjusting screw rod is rotationally connected to the tail plug, the locking rod is movably arranged in the cylinder barrel, the outer diameter of the locking rod is smaller than the inner diameter of the cylinder barrel, and the surface of the locking rod is fixedly sleeved with a sealing ring. The motor air tightness detection fixture comprises the air inflation fixture and the plugging fixture, the air inflation fixture and the plugging fixture are simple in structure and easy to produce and manufacture, meanwhile, the motor shell is plugged through opposite pulling of the spring bolt and the cylinder barrel, the plugging effect is good, the motor air tightness detection fixture is not prone to being affected by the shape and the thickness of a hole, and the motor air tightness detection efficiency is greatly improved.

Description

Technical Field

[0001] This application relates to the technical field of motor housing airtightness detection, and particularly to an auxiliary tooling for motor airtightness detection. Background Art

[0002] Figure 1 For half of the motor housing 3, there are multiple water holes, wire holes and controller holes on its side wall. These holes have irregular shapes and relatively thin wall thicknesses, and it is not easy to fix the existing plugs for inflation detection.

[0003] Therefore, to solve the above problems, our company has specifically developed an auxiliary inspection tooling that is easy to fix and has a good sealing effect. Utility Model Content

[0004] The purpose of this application is to provide an auxiliary tooling for motor airtightness detection to solve the problems raised in the above background art.

[0005] To achieve the above purpose, this application provides an auxiliary tooling for motor airtightness detection and adopts the following technical solutions:

[0006] An auxiliary tooling for motor airtightness detection includes an inflation fixture and a plugging fixture. Both the inflation fixture and the plugging fixture include a cylinder barrel, a locking rod, a tail plug and an adjusting screw. The tail plug is fixed at the end of the cylinder barrel. The adjusting screw is rotatably connected to the tail plug. The locking rod is movably arranged in the cylinder barrel. The outer diameter of the locking rod is smaller than the inner diameter of the cylinder barrel. A sealing ring is fixedly sleeved on the surface of the locking rod. A threaded internal thread is opened at one end of the locking rod close to the adjusting screw. The adjusting screw is threadedly connected to the locking rod. One end of the locking rod away from the tail plug has a lock head. The lock head includes a connecting rod and a locking tongue. The outer diameter of the connecting rod is smaller than the outer diameter of the locking rod. The locking tongue is fixed at the end of the connecting rod. A sealing gasket is fixed at the end of the cylinder barrel close to the lock head.

[0007] An air inlet hole is opened on the surface of the cylinder barrel in the inflation fixture. The air inlet hole is arranged at one end away from the tail plug, and an air inlet quick connector is installed at the air inlet hole.

[0008] Preferably, the tail plug has an extension part, and an oval-shaped guide groove is opened in the extension part. The rod body of the locking rod close to the guide groove is oval-shaped.

[0009] By adopting the above technical solutions, through the arrangement of the guide groove, the locking rod can move back and forth along the guide groove without rotating, so as to facilitate the adjusting screw to adjust the position of the locking rod.

[0010] The tail plug is fixed on the cylinder barrel by screws.

[0011] The locking tongue is rectangular, and the side wall of the locking tongue away from the cylinder barrel is an arc surface.

[0012] A plurality of grooves are formed on the surface of the locking rod, and sealing rings are arranged in the grooves in a matching manner.

[0013] In summary, the present application includes at least one of the following beneficial technical effects: The auxiliary tooling for motor airtightness detection includes an inflation fixture and a plugging fixture. The inflation fixture and the plugging fixture have relatively simple structures and are easy to manufacture. At the same time, the use of the locking tongue and the cylinder barrel to pull and seal on the motor housing has a good sealing effect, is not easily affected by the shape and thickness of the hole, and greatly improves the efficiency of motor airtightness detection. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of a motor housing in the prior art.

[0015] Figure 2 is a schematic diagram of the use state of an embodiment of the present application.

[0016] Figure 3 is a schematic structural diagram of an inflation fixture in an embodiment of the present application.

[0017] Figure 4 is an exploded structural diagram of an inflation fixture in an embodiment of the present application.

[0018] Figure 5 is a schematic structural diagram of the connection relationship between the locking tongue and the motor housing in an embodiment of the present application.

[0019] Description of the reference numerals: 1. Inflation fixture; 11. Cylinder barrel; 12. Locking rod; 13. Tail plug; 131. Extension part; 1311. Guide groove; 14. Adjusting screw; 15. Sealing ring; 16. Connecting rod; 17. Locking tongue; 18. Sealing pad; 19. Air inlet quick connector; 2. Plugging fixture. Detailed Description of the Embodiment

[0020] The following is a further detailed description of the present application with reference to the attached Figures 2 - 5 drawings.

[0021] An embodiment of the present application discloses an auxiliary tooling for motor airtightness detection. Refer to Figures 2 - 5, including an inflatable fixture 1 and a plugging fixture 2. Both the inflatable fixture 1 and the plugging fixture 2 include a cylinder barrel 11, a locking rod 12, a tail plug 13 and an adjusting screw rod 14. The tail plug 13 is fixed to the end of the cylinder barrel 11 by screws. The adjusting screw rod 14 is rotatably connected to the tail plug 13. The locking rod 12 is movably arranged inside the cylinder barrel 11. The outer diameter of the locking rod 12 is smaller than the inner diameter of the cylinder barrel 11. A sealing ring 15 is fixedly sleeved on the surface of the locking rod 12. A threaded internal thread is provided at one end of the locking rod 12 close to the adjusting screw rod 14. The adjusting screw rod 14 is threadedly connected to the locking rod 12. One end of the locking rod 12 away from the tail plug 13 has a lock head. The lock head includes a connecting rod 16 and a lock tongue 17. The outer diameter of the connecting rod 16 is smaller than the outer diameter of the locking rod 12. The lock tongue 17 is fixed to the end of the connecting rod 16. A sealing gasket 18 is fixed to the end of the cylinder barrel 11 close to the lock head;

[0022] An air inlet hole is provided on the surface of the cylinder barrel 11 in the inflatable fixture 1. The air inlet hole is arranged at one end away from the tail plug 13. An air inlet quick connector 19 is installed at the air inlet hole.

[0023] Refer to Figure 4 , the tail plug 13 has an extension part 131. An oval guide groove 1311 is provided inside the extension part 131. The rod body of the locking rod 12 close to the guide groove 1311 is oval.

[0024] By providing the guide groove 1311, the locking rod 12 can move back and forth along the guide groove 1311 without rotating, so as to facilitate the adjusting screw rod 14 to adjust the position of the locking rod 12.

[0025] Refer to Figures 3 - 5 , in order to facilitate the lock tongue 17 to enter the motor housing from the hole, the lock tongue 17 is rectangular, and the side wall of the lock tongue 17 away from the cylinder barrel 11 is an arc surface.

[0026] Refer to Figure 4 , in order to ensure good airtightness of the inflatable fixture 1 and the plugging fixture 2, multiple grooves are provided on the surface of the locking rod 12, and sealing rings 15 are arranged in the grooves in a matching manner.

[0027] The implementation principle of an auxiliary tooling for motor airtightness detection in the embodiment of the present application is as follows:

[0028] Workers use one inflatable fixture 1 and multiple plugging fixtures 2 to seal all the holes on the motor housing. During plugging, the workers pass the lock heads in the inflatable fixture 1 and the plugging fixtures 2 into the holes, and then turn the adjusting screw rod 14 to pull the locking rod 12 outwards, so that the lock tongue 17 and the end face of the cylinder barrel 11 are pressed against the motor housing wall. After that, high-pressure air is filled into the cylinder barrel 11 through the air inlet quick connector 19 in the inflatable fixture 1 and kept under pressure. The detection is relatively convenient and the detection effect is good.

[0029] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. An auxiliary tool for motor air tightness detection, characterized in that: The invention comprises an inflatable clamp (1) and a plugging clamp (2), wherein the inflatable clamp (1) and the plugging clamp (2) both comprise a cylinder (11), a locking rod (12), a tail plug (13) and an adjusting screw (14), wherein the tail plug (13) is fixed to the end of the cylinder (11), the adjusting screw (14) is rotatably connected to the tail plug (13), the locking rod (12) is movably arranged in the cylinder (11), the outer diameter of the locking rod (12) is smaller than the inner diameter of the cylinder (11), and a sealing ring (14) is fixedly sleeved on the surface of the locking rod (12). 15), a threaded internal thread is provided at one end of the locking rod (12) close to the adjusting screw (14), the adjusting screw (14) is threadedly connected to the locking rod (12), an end of the locking rod (12) away from the tail plug (13) is provided with a locking head, the locking head comprises a connecting rod (16) and a locking tongue (17), the outer diameter of the connecting rod (16) is smaller than the outer diameter of the locking rod (12), the locking tongue (17) is fixed to the end of the connecting rod (16), and a sealing gasket (18) is fixed to the end of the cylinder (11) close to the locking head, An air inlet hole is provided on the surface of the cylinder barrel (11) in the inflation clamp (1). The air inlet hole is arranged at an end away from the tail plug (13), and an air inlet quick connector (19) is installed at the air inlet hole.

2. The auxiliary tooling for motor air tightness detection according to claim 1 is characterized in that: The tail plug (13) has an extension portion (131), an elliptical guide groove (1311) is provided in the extension portion (131), and the rod body of the locking rod (12) close to the guide groove (1311) is elliptical.

3. The auxiliary tooling for motor air tightness detection according to claim 1 is characterized in that: The tail plug (13) is fixed to the cylinder barrel (11) by means of screws.

4. The auxiliary tooling for motor air tightness detection according to claim 1, characterized in that: The locking tongue (17) is rectangular, and the side wall of the locking tongue (17) away from the cylinder (11) is an arc-shaped surface.

5. The auxiliary tooling for motor air tightness detection according to claim 1, characterized in that: The surface of the locking rod (12) is provided with a plurality of grooves, and a sealing ring (15) is matched and arranged in the grooves.

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